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Microalgae Cultivation and Biomass Quantification in a Bench-Scale Photobioreactor with Corrosive Flue Gases
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CO2-measuring dongle.

Marc-Aurèle Boillat1, Peter C Hauser1

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This summary is machine-generated.

This study presents a compact, pocketable carbon dioxide (CO2) monitor for indoor air quality assessment. The device uses a novel photoacoustic sensor and connects to a PC for power and data visualization, aiding in health-risk reduction.

Keywords:
Air quality monitoringCO2-sensorForthPython

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Area of Science:

  • Environmental Science
  • Engineering
  • Public Health

Background:

  • Indoor air quality (IAQ) is crucial for health, especially concerning airborne pathogens.
  • Rising carbon dioxide (CO2) levels indicate poor ventilation and potential health risks.
  • Existing CO2 monitoring solutions can be bulky or expensive.

Purpose of the Study:

  • To develop a compact, portable, and user-friendly CO2 monitoring device.
  • To assess indoor air quality for improved health and safety.
  • To provide real-time CO2 measurements for trend analysis.

Main Methods:

  • A small printed circuit board (PCB) based device utilizing a novel photoacoustic CO2 sensor.
  • USB connectivity to a personal computer (PC) for power and data transfer.
  • A Python-based graphical user interface (GUI) for data visualization and analysis.
  • An MSP430FR2433 microcontroller programmed using Forth for sensor control and communication.

Main Results:

  • The device provides a compact and pocketable solution for CO2 measurement.
  • Real-time data visualization and trend plotting on a PC display are enabled.
  • The photoacoustic sensor offers a novel approach to CO2 sensing in a small form factor.

Conclusions:

  • The developed CO2 monitor is suitable for personal indoor air quality monitoring.
  • It offers a practical tool for identifying inadequate ventilation, particularly relevant during airborne pathogen transmission events.
  • The device's design facilitates ease of use and data interpretation for public health applications.